We humans love to hear about how utterly useless pandas are at sex. 'They won't breed to save their species!' Except that's not true at all, says zoologist Lucy Cooke.

Wild pandas are extremely virile — their sperm is 10 to 100 times more dense than human sperm — and pandas in the wild have been observed having sex 40 times in a single afternoon.

In this comprehensive and fascinating talk, Cooke explains the panda mating ritual ("a sort of urinary Olympics"), why captive breeding has created a second kind of panda that struggles to survive in the wild, and she reveals what humans can really do help: stop micromanaging pandas' sex lives.